A level-49 Changeling Principal posing as a Dromedarian guard, killed by Carl and harvested for his glowing brain.
Svern is a Level 49 Changeling Principal Carl finds guarding the City Hall catacomb, disguised as a card-playing Dromedarian. Knocked out by Louis's Cloud of Exhaust (only 50 seconds, far shorter than expected against a boss-strength mob), he reverts to a small, faceless changeling form with a sapphire-glowing head; Carl finishes him with Talon Strike and pockets his brain-head, which Mordecai can render into a potion. His unmasking reveals the Waster Patrol are secretly changelings.
In disguise, a Dromedarian guard; in true form, a small faceless humanoid changeling whose head glows sapphire like a jellyfish.
A disguised Changeling Principal guard whose death exposes the town's shapeshifter conspiracy.